Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)
The 4R70W has the following features:
- Wide ratio gears
- Four speeds
- Rear wheel drive
- Automatic
- Electronic shift
- Torque converter clutch control
- Line pressure controls
The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Summer tires (if equipped)
Summer tires provide superior performance on wet and dry roads. Summer
tires do not have the Mud and Snow (M+S or M/S) tire traction rating on the
tire side wall. Since summer tires do not have the same traction performance
as All-season or Snow tires, Ford do ...
Transmission Connector Layouts
Transmission Vehicle Harness Connector
Transmission Internal Harness Connector
Digital Transmission Range (TR) Sensor Connector
Output Shaft Speed (OSS) Sensor Harness Connector
Digital Transmission Range (TR) Senso ...
Transmission Fluid Cooler - Backflushing and Cleaning
1. CAUTION: Do not use any supplemental transmission fluid
additives or cleaning
agents. The use of these products could cause internal transmission
components to fail;
this will effect the operation of the transmission.
Conduct backflushing with a sui ...
